by abhishek | Aug 26, 2020 | Chemical Effects of Current
Coulomb’s LawThe force between two electric charges is directly proportional to the product of the magnitude of the charges (q1 and q2) and inversely proportional to the square of the distance (r) between them. So, according to the coulomb’s law: F α or F = K Where...
by abhishek | Aug 26, 2020 | Chemical Effects of Current
There are two types of electric charges: (i) Positive charges (ii) Negative charges. To show that there are two types of electric charges, let’s do some experiments. Take two empty plastic bottles and rub them with wool. This makes them both negatively...
by abhishek | Aug 26, 2020 | Chemical Effects of Current
Modern world cannot think to live without electricity, because every aspect of our life is influenced by electricity. For example, without electricity there would be no television, radio, computers, videogames, electric lights, refrigerators, air conditioners and...
by abhishek | Aug 26, 2020 | Evolution
Biogenetic law is also known as Recapitulation Theory. It was postulated by Ernst Haeckel in 1866. According to the biogenetic law ontogeny recapitulates phylogeny , i.e. during the development of the animal embryo the evolutionary development of the species is...
by abhishek | Aug 26, 2020 | Evolution
The theory of ‘natural selection’ for organic evolution was given by Charles Darwin in 1858 in his famous book ‘The Origin of Species’. This theory was widely accepted by various biologists. The main postulates of Darwin’s theory of evolution are: 1. Rapid...
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